import java.util.Arrays;

public class TestDemo3 {
    public static void main(String[] args) {
        TestDemo2 t2 = new TestDemo2();
        System.out.println(Arrays.toString(t2.b));
        t2.copy1(t2.a);
        int[] c;
        c = t2.copy2();
        System.out.println(Arrays.toString(c));
    }
}
